import java.util.ArrayList;
import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: shy
 * @Date: 2021/05/08/21:10
 * @Description:
 */
public class test1 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
    }

}
